Anthony Collao, the 18-year-old straight Queens teen beaten to death with an iron pipe by a gang of homophobic teens who thought he was gay, was remembered last night by a vigil hosted by family and friends. “It’s really hard, really hard,” says Anthony’s sister Karen. “You get a phone call your brother is in the hospital type thing you can’t imagine it.” Anthony’s four alleged attackers — Nolis Ogando, 17, Luis Tabales, 17, Alex Velez, 16, and Christopher Lozada, 17 — are being held on bond.